activity
adult
answering
arms
attention
audience
caucasian
chinese
classroom
communication
concentration
cooperation
course
discourse
discussion
educating
education
emotions
ethnicity
faculty
group
hands
information
institute
intelligence
interaction
interest
interior
international
knowledge
lecture
lesson
mixed
multiethnic
participants
people
portrait
raising
seminar
students
studying
summary
together
training
university
women
workshop
young